I have an application that runs fine until SP1 is applied (both 32bit and 64bit versions of Windows 7 Enterprise). I am trying to compile all the hotfixes in one place so I can selectively run them and determine the culprit through process of elimination. I have tried to use the Windows Update Downloader application, but I cannot find a .ulz file that will give me all of the updates released between RTM and SP1. Does anyone know where I might still find that .ulz file? I preapologize if this subject is off topic or upsetting to anyone ... Regards, ~fa99tty